Display panel and manufacturing method thereof and display apparatus

Patent metadata

Field	Value
Publication number	US-12133435-B2
Application number	US-202117523203-A
Country	US
Kind code	B2
Filing date	Nov 10, 2021
Priority date	Nov 20, 2019
Publication date	Oct 29, 2024
Grant date	Oct 29, 2024

Abstract

The present application discloses a display panel and manufacturing method thereof and a display apparatus. The display panel includes: a first sub-pixel disposed in the first display area and including a first light-emitting structure, and the first light-emitting structure including at least one first common layer disposed between the first electrode and the second electrode; and a second sub-pixel disposed in the second display area and including a second light-emitting structure, and the second light-emitting structure including at least one second common layer disposed between the third electrode and the fourth electrode, in which a thickness of the fourth electrode is smaller than a thickness of the second electrode, and a total thickness of the at least one second common layer is greater than a total thickness of the at least one first common layer.

First claim

What is claimed is:

1. A display panel comprising:
a first display area;
a light-transmitting area, wherein the first display area surrounds the light-transmitting area;
a first non-display area, wherein the first non-display area surrounds both the first display area and the light-transmitting area;
a second display area adjacent to the first display area;
a first sub-pixel disposed in the first display area and comprising a first electrode, a first light-emitting structure disposed on the first electrode, and a second electrode disposed on the first light-emitting structure, the first light-emitting structure comprising:
at least one first common layer disposed between the first electrode and the second electrode, and
a first emitting layer, wherein the at least one first common layer comprises a first sub-common layer disposed between the first electrode and the first emitting layer and a second sub-common layer disposed between the first emitting layer and the second electrode, and the second sub-common layer comprises both an electron inject layer and an electron transport layer; and
a second sub-pixel disposed in the second display area and comprising a third electrode, a second light-emitting structure disposed on the third electrode, and a fourth electrode disposed on the second light-emitting structure, the second light-emitting structure comprising:
at least one second common layer disposed between the third electrode and the fourth electrode, and
a second emitting layer, wherein the at least one second common layer comprises a third sub-common layer disposed between the third electrode and the second emitting layer and a fourth sub-common layer disposed between the second emitting layer and the fourth electrode, the fourth sub-common layer comprises both an electron inject layer and an electron transport layer, a thickness of the third sub-common layer is greater than a thickness of the first sub-common layer, a thickness of the fourth sub-common layer is greater than a thickness of the second sub-common layer, a thickness of the fourth electrode is smaller than a thickness of the second electrode, a total thickness of the at least one second common layer is greater than a total thickness of the at least one first common layer.

2. The display panel of claim 1 , further comprising:
a light-transmitting area, wherein the second display area extends from the light-transmitting area through the first display area to be connected with the first non-display area.

3. The display panel of claim 2 , wherein the light-transmitting area is a second non-display area.

4. The display panel of claim 2 , wherein the light-transmitting area is a third display area, and a transmittance of the third display area is greater than a transmittance of the first display area.

5. The display panel of claim 4 , wherein a transmittance of the light-transmitting area is greater than or equal to 15%.

6. The display panel of claim 1 , wherein a thickness of the third sub-common layer is greater than a thickness of the first sub-common layer.

7. The display panel of claim 1 , wherein the first sub-common layer and the third sub-common layer respectively comprise a hole inject layer and a hole transport layer, and the first electrode, the hole inject layer, the hole transport layer, and the first emitting layer are stacked in sequence.

8. The display panel of claim 1 , wherein the third sub-common layers are spaced from each other.

9. The display panel of claim 1 , wherein the fourth sub-common layers are spaced from each other.

10. The display panel of claim 1 , wherein the third sub-common layers are interconnected.

11. The display panel of claim 10 , wherein the third sub-common layer of the second display area and the first sub-common layer of the first display area are interconnected.

12. The display panel of claim 1 , wherein the fourth sub-common layers of adjacent second sub-pixels are interconnected.

13. The display panel of claim 12 , wherein the fourth sub-common layer of the second display area and the second sub-common layer of the first display area are interconnected.

14. A display apparatus comprising the display panel of claim 1 .

15. The display panel of claim 1 , wherein the second sub-common layer and the fourth sub-common layer respectively comprise an electron inject layer and an electron transport layer, and the second emitting layer, the electron transport layer, the electron inject layer, and the fourth electrode are stacked in sequence.

16. The display panel of claim 1 , wherein a thickness of the fourth sub-common layer is greater than a thickness of the second sub-common layer.

Assignees

• Kunshan Govisionox Optoelectronics Co Ltd

Inventors

• Liu Mingxing
• Zhang Zhiyuan
• Wang Panpan
• Peng Chao Chi
• Gan Shuaiyan
• Li Weili

Classifications

• H10K59/876

  comprising a resonant cavity structure, e.g. Bragg reflector pair · CPC title

• H10K59/8052

  Cathodes · CPC title

• H10K50/171

  Electron injection layers · CPC title

• H10K50/17

  Carrier injection layers · CPC title

• H10K59/30 Primary

  Devices specially adapted for multicolour light emission · CPC title